Hello Mia,
People who die accidentally are more likely to remember their past lives. Most of us don’t remember our past lives, but some habits, thoughts, and behaviors from those lives carry forward into this one. These past life actions, along with our present habits, shape our character.
In Vedic astrology, some planets can give clues about past life actions. For example, if a man's Venus (Shukra) is badly affected in his horoscope, he may face problems in his married life. This could be because of some past life actions that are now affecting his present relationship.